As alluded to earlier, the center of gravity is the point at which the body's mass is equally balanced, and this point changes depending on one's position (arms up/down, leaning, turning a somersault, and so forth). For example, lets think of a seesaw (a uniform mass solid plank on a triangle stand). Forces required to make equilibrium happen will change with the changing of the center of gravity. When viewed from the back, the lateral line of gravity passes through the occipital protuberance, the C7 and L5 spinous processes, the coccyx and pubic cartilage, and bisects the knees and ankles. The trachea – also known as the windpipe – serves as the passageway for inhalation. Biomechanics The study of forces and their effects on the human body Year 11 Achievement Standard 1.2 Center of Gravity and Stability KINESIOLOGY Scientific Basis of Human Motion, 11 th edition Hamilton, Weimar & Luttgens Presentation Created by TK Koesterer, Ph.D., ATC Humboldt State University Revised by Hamilton & Weimar REVISED FOR FYS by J. Wunderlich, Ph.D. Will you please bend over… :P Well your center of mass just went outside your body. Flexion Movement resulting in a decrease of the joint angle, usually moving anteriorly in the sagittal plane. When oxygen passes through the trachea into the lungs, it … The Human Center of Gravity . Human Body Diagram. Line of gravity should pass through the midline of the body, and bilateral structures such as the mastoid, shoulder, iliac crest, knee, and ankles should be in the same horizontal plane.

For this reason, the center of gravity is often identified as the point where all the weight of the body or object is concentrated. Discussion: The center of mass is only dependent on the fact that how is mass distributed over a 3D space. 4.6). The center of gravity of a body is sometimes described as its balance point or that point about which a body would balance without a tendency to rotate. Thus, the A-P and lateral lines of gravity divide the body into four quarters (Fig. Plumb Line Analysis.